工程振动影响范围的评价

工程振动会对民房造成一定影响,评价这一问题需要确定工程振动安全标准以及影响范围。当采用不同标准时,安全距离有差异,需要具体问题具体对待。对于大吨位机械施工造成民房振动破坏的,可采取隔震措施,并根据场地土及房屋的主频范围避开主振频率,以减轻房屋共振。在城市活断层的研究中,需要对近断层工程破坏作用做出评价,由于地震的发生,断层的破裂时间与地点无法准确预知,因此这种破坏作用的研究只能限于理论计算,通过测试方法研究振动的作用,以期在近断层的破坏研究中得到借鉴。

EVALUATION ON INFLUENCING RANGE OF ENGINEERING VIBRATION

Engineering vibration impacts civil buildings to some extent,and it is necessary to determine safe standard and influencing range of engineering vibration to solve the problem.Safe range is different with different standards,so it needs to solve different problems in different ways.To civil buildings damaged by vibration of tons of weight of mechanic construction,we can take such measures as separating vibration and avoiding main vibration frequency according to the main frequency range of field and building,so as to mitigate sympathetic vibration of building.In the study on city active fault,it is necessary to evaluate building damage near fault.Since occurring time and location of earthquake and rupture time of fault are not predictable,research on damage is limited to theoretic calculation.By studying vibration with test method,it is expected to refer the study on building damage near fault.